netdev - RE: [PATCH net-next v4 0/5] dpaa2-eth: add MAC/PHY support through phylink

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Date:   Thu, 19 Dec 2019 14:19:25 +0000
From:   Ioana Ciornei <ioana.ciornei@....com>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
CC:     "davem@...emloft.net" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "f.fainelli@...il.com" <f.fainelli@...il.com>
Subject: RE: [PATCH net-next v4 0/5] dpaa2-eth: add MAC/PHY support through
 phylink

> Subject: Re: [PATCH net-next v4 0/5] dpaa2-eth: add MAC/PHY support through
> phylink
> 
> On Sun, Nov 17, 2019 at 04:04:43PM +0000, Russell King - ARM Linux admin
> wrote:
> > The other thing I see is that with dpmac.7 added, I get all the iommu
> > group messages, and buried in there is:
> >
> > fsl_dpaa2_eth dpni.1: Probed interface eth1
> >
> > as expected.  When I issue the dpmac.8 command (which is when all those
> > warnings are spat out) I see:
> >
> > fsl_dpaa2_eth dpni.2: Probed interface eth1
> >
> > So dpni.1 has gone, eth1 has gone to be replaced by dpni.2 bound to eth1.
> >
> > Looking in /sys/bus/fsl-mc/devices/dpni.[12]/ it seems that both
> > devices still exist, but dpni.1 has been unbound from the dpaa2 eth
> > driver.
> 
> I'm seeing this again, it's very annoying because it means one of the
> interfaces vanishes and can't then be resurected.
> 
> [  161.573637] fsl_mc_allocator dpbp.2: Adding to iommu group 0
> [  161.579289] fsl_mc_allocator dpmcp.36: Adding to iommu group 0
> [  161.668060] fsl_mc_allocator dpcon.32: Adding to iommu group 0
> [  161.752477] fsl_mc_allocator dpcon.37: Adding to iommu group 0
> [  161.757221] fsl_mc_allocator dpcon.36: Adding to iommu group 0
> [  161.761981] fsl_mc_allocator dpcon.35: Adding to iommu group 0
> [  161.766704] fsl_mc_allocator dpcon.34: Adding to iommu group 0
> [  161.771453] fsl_mc_allocator dpcon.33: Adding to iommu group 0
> [  161.932117] fsl-mc dpcon.2: Removing from iommu group 0
> [  161.936171] fsl-mc dpcon.1: Removing from iommu group 0
> [  161.940239] fsl-mc dpcon.0: Removing from iommu group 0
> [  161.945283] fsl_mc_allocator dpcon.44: Adding to iommu group 0
> [  161.950074] fsl_mc_allocator dpcon.43: Adding to iommu group 0
> [  161.954807] fsl_mc_allocator dpcon.42: Adding to iommu group 0
> [  161.959513] fsl_mc_allocator dpcon.41: Adding to iommu group 0
> [  161.964236] fsl_mc_allocator dpcon.40: Adding to iommu group 0
> [  161.968933] fsl_mc_allocator dpcon.39: Adding to iommu group 0
> [  161.973642] fsl_mc_allocator dpcon.38: Adding to iommu group 0
> [  162.051949] fsl_dpaa2_eth dpni.1: Adding to iommu group 0
> [  162.206770] fsl_dpaa2_eth dpni.1: Probed interface eth1
> [  162.211811] fsl_mc_allocator dpcon.47: Adding to iommu group 0
> [  162.216544] fsl_mc_allocator dpcon.46: Adding to iommu group 0
> [  162.221260] fsl_mc_allocator dpcon.45: Adding to iommu group 0
> [  162.227232] fsl_mc_allocator dpcon.2: Adding to iommu group 0
> [  162.231864] fsl_mc_allocator dpcon.1: Adding to iommu group 0
> [  162.236497] fsl_mc_allocator dpcon.0: Adding to iommu group 0
> 
> [  167.581066] fsl_mc_allocator dpbp.3: Adding to iommu group 0
> [  167.586802] fsl_mc_allocator dpmcp.37: Adding to iommu group 0
> [  167.592368] fsl_mc_allocator dpcon.51: Adding to iommu group 0
> [  167.597120] fsl_mc_allocator dpcon.50: Adding to iommu group 0
> [  167.601869] fsl_mc_allocator dpcon.49: Adding to iommu group 0
> [  167.606604] fsl_mc_allocator dpcon.48: Adding to iommu group 0
> [  168.304644] fsl-mc dpcon.4: Removing from iommu group 0
> [  168.308710] fsl-mc dpcon.3: Removing from iommu group 0
> [  168.312783] fsl-mc dpcon.2: Removing from iommu group 0
> [  168.316828] fsl-mc dpcon.1: Removing from iommu group 0
> [  168.320874] fsl-mc dpcon.0: Removing from iommu group 0
> [  168.325946] fsl_mc_allocator dpcon.59: Adding to iommu group 0
> [  168.330682] fsl_mc_allocator dpcon.58: Adding to iommu group 0
> [  168.335393] fsl_mc_allocator dpcon.57: Adding to iommu group 0
> [  168.340105] fsl_mc_allocator dpcon.56: Adding to iommu group 0
> [  168.344816] fsl_mc_allocator dpcon.55: Adding to iommu group 0
> [  168.349530] fsl_mc_allocator dpcon.54: Adding to iommu group 0
> [  168.354256] fsl_mc_allocator dpcon.53: Adding to iommu group 0
> [  168.358981] fsl_mc_allocator dpcon.52: Adding to iommu group 0
> [  168.435784] fsl_dpaa2_eth dpni.2: Adding to iommu group 0
> [  168.600151] fsl_dpaa2_eth dpni.2: Probed interface eth1
> [  168.605298] fsl_mc_allocator dpcon.63: Adding to iommu group 0
> [  168.610023] fsl_mc_allocator dpcon.62: Adding to iommu group 0
> [  168.614751] fsl_mc_allocator dpcon.61: Adding to iommu group 0
> [  168.619470] fsl_mc_allocator dpcon.60: Adding to iommu group 0
> [  168.625990] fsl_mc_allocator dpcon.4: Adding to iommu group 0
> [  168.630614] fsl_mc_allocator dpcon.3: Adding to iommu group 0
> [  168.635251] fsl_mc_allocator dpcon.2: Adding to iommu group 0
> [  168.639890] fsl_mc_allocator dpcon.1: Adding to iommu group 0
> [  168.644539] fsl_mc_allocator dpcon.0: Adding to iommu group 0
> 
> Any ideas?
> 

Hi Russell,

Let me investigate a bit and I will get back with more info.

Ioana